Compare a stand alone model to an OBD-II scanner that requires a laptop.

Long cords allow you to run diagnostics while looking at the engine.

Some cords are too short to reach from the car cabin to the engine area. If you′re willing to look up the code, the scanner will be less expensive.

Decide if you want an OBD-II scanner that displays a description of the code or one that requires you to look up the code in a book.

Advanced scanners diagnose a broad spectrum of problems. If you want a basic scanner, you′ll be limited to diagnosing simple engine problems.

Identify the scanner′s code-reading limitations.

Determine if your car is compatible with the OBD-II scanner.

How to Buy a Scanner to Access OBD-II Data: This indicates that the problem has been resolved.

Take note if the light on the console goes out before you can take the car in for service.

The mechanic will use the codes as a starting point in determining the true cause of the problem. The auto technician will use a professional OBD2 reader for a more detailed scan of your car.

Take your car to an auto technician if you are unable to discover the source of the problem on your own.

The reader will display the problem codes generated by your car′s computer, as well as the definition of the codes. Attach the reader to your car′s 16-pin port, which is usually located under the steering wheel.

Use a personal OBD2 code reader to scan for problems (see Resources below).

It will be safer to limit your driving until this problem has been resolved. Blinking lights indicate that there is a serious problem occurring with the engine of the vehicle.

Look for blinking lights on your dashboard console.

The OBD2 will alert you to problems ranging from a loose or missing gas cap to an engine misfire. If there are any problems, the 'Check Engine' or 'Service Engine Soon' light will come on and stay on.

Check the dashboard console as you drive.

This indicates that the OBD2 is present and ready to diagnose problems that may exist. The light for 'Check Engine' or 'Service Engine Soon' should flash briefly.

Start the ignition and watch the components on the dashboard console.

How to Diagnose Car Problems with an OBD2:

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